Mxr Carbon Copy Schematic -

Before we dive into the resistors and capacitors, let’s look at the signal flow. The Carbon Copy is a . At its heart is the CoolAudio V3205SD, a modern reissue of the legendary Panasonic MN3205.

By filtering out the clock whine, they also filter out the high frequencies of the guitar signal. As the repeats decay, they get darker and darker. In the schematic, you will see specific capacitor and resistor values that determine this cutoff frequency. This is why the Carbon Copy never sounds harsh; the circuit inherently smoothes the edges. Mxr Carbon Copy Schematic

The internal modulation trimpots (often labeled "Rate" and "Depth" on the PCB) are set and forget. However, if you drill holes and wire external potentiometers to replace those trimpots, you can turn your Carbon Copy into a wild, seasick chorus machine. Before we dive into the resistors and capacitors,